8 entries under erstwhile topic. ×
| before(adverb, earlier, ahead, once) | |
| already(adverb, earlier, before, once) | |
| aforetime(adverb, earlier, before, once) | |
| beforetime(adverb, earlier, before, ahead, once) | |
| earlier(adverb, before, ahead, once) | |
| formerly(adverb, earlier, before, once) | |
| once(adverb, earlier, before, previously) | |
| previously(adverb, earlier, before, once) |
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| APA | Smart Define. (2015). since thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/since/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "since thesaurus" https://smartdefine.org/since/thesaurus/antonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, since thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/since/thesaurus/antonyms>. |
| MLA | Smart Define. "since thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/since/thesaurus/antonyms> |